<!DOCTYPE html>    
<html>    
<head>    
<meta charset="UTF-8">    
<title>showImages</title>
<!-- Latest compiled and minified CSS -->
<link href="https://cdn.bootcss.com/bootstrap/4.1.1/css/bootstrap.css" rel="stylesheet">
<link rel="stylesheet" href="//cdnjs.cloudflare.com/ajax/libs/bootstrap-table/1.12.1/bootstrap-table.min.css">
<style type="text/css">   
    .float{    
        float:left;    
        width : 200px;    
        height: 200px;    
        overflow: hidden;    
        border: 1px solid #CCCCCC;    
        border-radius: 10px;    
        padding: 5px;    
        margin: 5px;    
    }    
    img{    
        position: relative;    
    }    
    .result{    
        width: 200px;    
        height: 200px;    
        text-align: center;    
        box-sizing: border-box;    
    }   
  
  
    #file_input{  
        display: none;  
    }  
  
  
    .delete{  
        width: 200px;  
        height:200px;  
        position: absolute;  
        text-align: center;  
        line-height: 200px;  
        z-index: 10;  
        font-size: 30px;  
        background-color: rgba(255,255,255,0.8);  
        color: #777;  
        opacity: 0;  
        transition-duration: :0.7s;  
        -webkit-transition-duration: 0.7s;   
    }  
  
  
    .delete:hover{  
        cursor: pointer;  
        opacity: 1;  
    }  
  
  
        
</style>    
    
    
<script src="http://libs.baidu.com/jquery/2.0.0/jquery.min.js"></script>
<script src="https://cdn.bootcss.com/bootstrap/4.1.1/js/bootstrap.min.js"></script>
<!-- Latest compiled and minified JavaScript -->
<script src="//cdnjs.cloudflare.com/ajax/libs/bootstrap-table/1.12.1/bootstrap-table.min.js"></script>

<!-- Latest compiled and minified Locales -->
<script src="//cdnjs.cloudflare.com/ajax/libs/bootstrap-table/1.12.1/locale/bootstrap-table-zh-CN.min.js"></script>
<script type="text/javascript">    
    
    
window.onload = function(){
    var input = document.getElementById("file_input");    
    var result;    
    var dataArr = []; // 储存所选图片的结果(文件名和base64数据)  
    var fd;  //FormData方式发送请求    
    var oSelect = document.getElementById("select");  
    var oAdd = document.getElementById("add");  
    var oSubmit = document.getElementById("submit");  
    var oInput = document.getElementById("file_input");  
     
    if(typeof FileReader==='undefined'){    
        alert("抱歉，你的浏览器不支持 FileReader");    
        input.setAttribute('disabled','disabled');    
    }else{    
        input.addEventListener('change',readFile,false);    
    }　　　　　//handler    
    
        
    function readFile(){
        fd = new FormData();    
        var iLen = this.files.length;  
        var index = 0;  
        for(var i=0;i<iLen;i++){  
            if (!input['value'].match(/.jpg|.gif|.png|.jpeg|.bmp/i)){　　//判断上传文件格式    
                return alert("上传的图片格式不正确，请重新选择");    
            }  
            var reader = new FileReader();  
            reader.index = i;    
            fd.append(i,this.files[i]);  
            reader.readAsDataURL(this.files[i]);  //转成base64    
            reader.fileName = this.files[i].name;  
  
  
            reader.onload = function(e){   
                var imgMsg = {    
                    name : this.fileName,//获取文件名    
                    base64 : this.result   //reader.readAsDataURL方法执行完后，base64数据储存在reader.result里    
                }   
                dataArr.push(imgMsg);    
                result = '<div class="delete">delete</div><div class="result"><img src="'+this.result+'" alt=""/></div>';    
                var div = document.createElement('div');  
                div.innerHTML = result;    
                div['className'] = 'float';  
                div['index'] = index;    
                document.getElementsByTagName('body')[0].appendChild(div);  　　//插入dom树    
                var img = div.getElementsByTagName('img')[0];  
                img.onload = function(){    
                    var nowHeight = ReSizePic(this); //设置图片大小    
                    this.parentNode.style.display = 'block';    
                    var oParent = this.parentNode;    
                    if(nowHeight){    
                        oParent.style.paddingTop = (oParent.offsetHeight - nowHeight)/2 + 'px';    
                    }    
                }   
  
  
                div.onclick = function(){  
                    this.remove();                  // 在页面中删除该图片元素  
                    delete dataArr[this.index];  // 删除dataArr对应的数据  
                      
                }  
                index++;  
            }    
        }    
    }    
        
        
    function send(){   
  
  
        var submitArr = [];  
        for (var i = 0; i < dataArr.length; i++) {  
            if (dataArr[i]) {  
                submitArr.push(dataArr[i]);  
            }  
        }  
        // console.log('提交的数据：'+JSON.stringify(submitArr)) 
        $.ajax({    
            url : 'http://123.206.89.242:9999',    
            type : 'post', 
            data : JSON.stringify(submitArr),    
            dataType: 'json',    
            //processData: false,   用FormData传fd时需有这两项    
            //contentType: false,    
            success : function(data){    
                console.log('返回的数据：'+JSON.stringify(data))    
          　}
 
        })    
    }    
        
     
  
  
    oSelect.onclick=function(){   
        oInput.value = "";   // 先将oInput值清空，否则选择图片与上次相同时change事件不会触发  
        //清空已选图片  
        $('.float').remove();  
        dataArr = [];   
        index = 0;          
        oInput.click();   
    }   
  
  
    oAdd.onclick=function(){  
        oInput.value = "";   // 先将oInput值清空，否则选择图片与上次相同时change事件不会触发  
        oInput.click();   
    }   
  
  
    oSubmit.onclick=function(){    
        if(!dataArr.length){    
            return alert('请先选择文件');    
        }    
        send();    
    }    
}    
/*    
 用ajax发送fd参数时要告诉jQuery不要去处理发送的数据，    
 不要去设置Content-Type请求头才可以发送成功，否则会报“Illegal invocation”的错误，    
 也就是非法调用，所以要加上“processData: false,contentType: false,”    
 * */    
    
                
function ReSizePic(ThisPic) {    
    var RePicWidth = 200; //这里修改为您想显示的宽度值    
    
    var TrueWidth = ThisPic.width; //图片实际宽度    
    var TrueHeight = ThisPic.height; //图片实际高度    
        
    if(TrueWidth>TrueHeight){    
        //宽大于高    
        var reWidth = RePicWidth;    
        ThisPic.width = reWidth;    
        //垂直居中    
        var nowHeight = TrueHeight * (reWidth/TrueWidth);    
        return nowHeight;  //将图片修改后的高度返回，供垂直居中用    
    }else{    
        //宽小于高    
        var reHeight = RePicWidth;    
        ThisPic.height = reHeight;    
    }    
}    
    
    
$('#assessStage').bootstrapTable({
	method: 'post',
	url: "${BasePath}/api/teacher/teacherList",
	btn: true,
	pagination: true,
	pageSize: 10,
	pageNumber: 1,
	pageList: [10, 15, 30],//分页步进值
	striped: true,
	dataField: "list",
	iconSize: 'outline',
	icons: {
		refresh: 'glyphicon-repeat',
		toggle: 'glyphicon-list-alt',
		columns: 'glyphicon-list'
	},
	columns: [
		[
			{
				field: 'student_name',
				title: '姓名',
				align: 'center',
				colspan: 1
				,width:100
			},
			{
				field: 'hospital_name',
				title: '带教单位',
				align: 'center',
				colspan: 1
				,width:200
			},
			{
				field: 'teacher_name',
				title: '指导老师',
				align: 'center',
				colspan: 1
				,width:100
			},
			{
				field: 'start_time',
				title: '开始时间',
				align: 'center',
				colspan: 1,
				width:100
			}
		]
	]
});

</script>    
</head>    
    <body>    
	<div class="container" style="display: none;">    
		<label>请选择一个图像文件：</label>  
		<button id="select">(重新)选择图片</button>  
		<button id="add">(追加)图片</button>  
		<input type="file" id="file_input" multiple/> <!--用input标签并选择type=file，记得带上multiple，不然就只能单选图片了-->    
		<button id="submit">提交</button>
	</div>
	<table id="assessStage" data-height="467" data-mobile-responsive="true" style="table-layout: fixed;">
    </table>
    </body>    
</html>    
